FR150A Series Multifunctional Compact
Inverter
- 59 -
Appendix B: Braking Resistor
When deceleration or rapid deceleration in high inertia load, motor will be in the state of power
generation, the load power will pass the converter part to inverter DC part lead to the rise of inverter
bus voltage, when it is higher than a certain value, inverter will alarm with voltage fault, even damage
the power module, so we must configure braking system.
FR150A multi-functional compact inverter built-in braking unit in all series models, customer need to
only connect external braking resistor. We recommend below configuration of resistor power and
value. User can adjust the value in the range properly according to the load
Model
Brake unit
125%braking torque
Minimum
allowable
braking
resistance
(
10%ED,max 10s
)
model
num
Recommended
brake resistor
specifications
Number of
brake
resistors
FR150A-2S-0.2B
Build in
100W 600
Ω
1
360
Ω
FR150A-2S-0.4B
100W 600
Ω
1
360
Ω
FR150A-2S-0.7B
200W 600
Ω
1
100
Ω
FR150A-2S-1.1B
300W 360
Ω
1
100
Ω
FR150A-2S-1.5B
300W 180
Ω
1
100
Ω
FR150A-2S-2.2B
300W 180
Ω
1
100
Ω
FR150A-4T-0.7B
200W 600
Ω
1
100
Ω
FR150A-4T-1.5B
300W 360
Ω
1
100
Ω
FR150A-4T-2.2B
300W 180
Ω
1
100
Ω
FR150A-4T-4.0B
300W 180
Ω
1
100
Ω
FR150A-4T-5.5B
400W 150
Ω
1
100
Ω
FR150A-4T-7.5B
600W 100
Ω
1
80
Ω
FR150A-4T-011B
800W 75
Ω
1
60
Ω
FR150A-4T-015B
800W 75
Ω
1
60
Ω
FR150A-4T-018B
1.1kW 50
Ω
1
43
Ω
FR150A-4T-022B
1.6kW 40
Ω
1
31
Ω
FR150A-4T-030B
4.0kW 32
Ω
1
24
Ω
FR150A-4T-037B
4.5kW 27
Ω
1
24
Ω
FR150A-4T-045
FRBU-4T-045
1
6.0kW 20
Ω
1
19.2
Ω
FR150A-4T-055
FRBU-4T-132
1
7.0kW 20
Ω
1
19.2
Ω
FR150A-4T-075
7.0kW 20
Ω
1
19.2
Ω
FR150A-4T-090
9.0kW 13
Ω
1
12.8
Ω
FR150A-4T-110
11.0kW 10.2
Ω
1
9.6
Ω
FR150A-4T-132
15.0kW 7.5
Ω
1
6.8
Ω
FR150A-4T-160
FRBU-4T-315
1
18.0kW 6.5
Ω
1
6.3
Ω
Note: The wire in the table is for single resistor, when resistors in parallel, the wire should be
bigger. The withstand voltage of wire for single phase inverter is above AC300V, for three phase
inverter is above AC450V, temperature tolerance of wire 105
℃